his brother, tamerlan, in the black hat, was killed overnight in a police shoot-out. >> both men are believed to be from the chechnyan region of russia. they reportedly have been in the united states for one year. bob orr is tracking the story from washington. bob, good morning. what can you tell us? >> reporter: good morning, gayle and charlie. well, the first order of business is to try to find the remaining brother who is on the lam, somewhere around the boston area, they believe, the man who has been now infamously noted white baseball cap backward. that's dzhokhar tsarnaev, we believe. he's believed to be 19 years of age. his family comes from the chechnya area, which you mentioned. his older brother, tamerlan, was killed in a police shoot-out last night around watertown, massachusetts. so the first order of business is to try to find that guy because they're worried that he's heavily armed, he may have other explosives with him, he's already demonstrated a willingness and an ability to kill, and they're concerned about what he could do next. the other order of business, though,